Firefighters responded to a vegetation fire near the Otay Valley Regional Park in Chula Vista, authorities said on Monday.
The blaze was reported near Beyer Way and Fourth Avenue. There, crews could be seen battling flames.
Details on what started the fire were not immediately clear. No injuries were reported in connection to the fire.
Get top local stories in San Diego delivered to you every morning. Sign up for NBC San Diego's News Headlines newsletter.